People with ADHD are often intelligent but struggle because of low working memory and reduced executive function, not stupidity. Understanding these are brain chemistry issues, not personal failings, helps you treat yourself and others with more compassion.
Chapters
If you have ADHD, you're probably really smart, and you may wonder why you do things that might feel stupid. Because we have low working memory, and it's good for us to understand being smart and doing things that feel stupid can live together because it's brain chemistry. You have low executive function, low working memory, low serotonin, low dopamine. And once you understand how this is brain chemistry and how it works, it can really help you to be be kinder and gentler with yourself and help others around you to understand why these things are happening and going on with you.